All unitary cubic curvature gravities in D dimensions

被引:50
作者
Sisman, Tahsin Cagri [1 ]
Gullu, Ibrahim [1 ]
Tekin, Bayram [1 ]
机构
[1] Middle E Tech Univ, Dept Phys, TR-06531 Ankara, Turkey
关键词
D O I
10.1088/0264-9381/28/19/195004
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We construct all the unitary cubic curvature gravity theories built on the contractions of the Riemann tensor in D-dimensional (anti)-de Sitter spacetimes. Our construction is based on finding the equivalent quadratic action for the general cubic curvature theory and imposing ghost and tachyon freedom, which greatly simplifies the highly complicated problem of finding the propagator of cubic curvature theories in constant curvature backgrounds. To carry out the procedure we have also classified all the unitary quadratic models. We use our general results to study the recently found cubic curvature theories using different techniques and the string generated cubic curvature gravity model. We also study the scattering in critical gravity and give its cubic curvature extensions.
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页数:22
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